1895,] HTMENOPTERA OF THE ISLAND OF GRENADA. 767 



First joint of flagellum about one-half longer 

 than the second, the third and following 

 joints hardly longer than the second and 



about 2^ times as long as thick H. unifoveata, 



Antennffi uniformly dark brown or blackish. 



Metapleura black, the scutellar channels striated. 

 First joint of flagellum long, nearly twice as 

 long as the second, the third and follow- 

 ing joints about equal, a little longer 

 than the second, 3 times as long as 



thick H. dolichomera. 



Metapleura reddish, the scutellar channels 

 closely punctate. 

 First joint of flagellum only one-half longer 

 than the second, the third and following 

 about 3 times as long as thick H. instabilis. 



3. Thorax at sides rufous or brownish piceous, the 



metapleura always red. 



Antennas brown, the three or four basal joints and 



the legs brownish yellow. 



First joint of flagellum one-third longer than 



the second, the third and following joints 



not or scarcely longer than tlie second, 



almost 3 times as long as thick H. riifolateralis. 



Thorax at sides black. 



Antennte slender, brown, the three basal joints and 

 legs brownish yellow. 

 First joint of flagellum one-half longer than the 

 second, the following joints about equal, 

 fully 3 times as long as thick H. brunneiclavata, 



4. Antennae black ; legs brownish yellow. 



First joint of flagellum one-half longer than the 

 second, the third and following joints about 

 4 times as long as thick H. 'proxima. 



(1) Hexaplasta melanoceea, sp. n. 



$ . Length 1 to 1*2 mm. Polished black ; mandibles and legs 

 brownish yellow ; metanotum with a sparse griseous pubescence. 



Antennae 13-jointed, black, extending to middle of abdomen ; 

 the scape clavate, about 1| times as long as the pedicel, the latter 

 a little longer than thick ; funicle 5-jointed, the first joint more 

 than twice as long as thick, joints 2-5 obconic, subequal, about 1| 

 times as long as thick, or nearly so ; club 6-jointed, the joints 

 oblong, not twice as long as thick, the first the thinnest, the last 

 the stoutest. Mesonotum very little longer than wide at base, the 

 collar with some sparse glittering hairs at the sides ; scutellura 

 finely rugose, the cup ovate, with a fovea posteriorly and 4 punc- 

 tures on the anterior part. Wings hyaline, ciliate, the veins 

 brownish yellow, the marginal cell open along its fore margin 

 from the basal one-third, the second abscissa of radius only 

 slightly longer than the first and slightly stouter, the outer vein of 

 the areolet alone present. Abdomen a little longer than the thorax, 

 with a griseous pubescent girdle at base, not interrupted at middle 

 above. 



(S . Length 0-9 mm. Antennae 15-jointed, filiform, about 1| 

 times as long as the body, black ; the first joint of the flagellum is 



49* 



